login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A292648 Rank of Pi*n when all the numbers Pi*j and (Pi+1)*k, for j>=1, k>=1, are jointly ranked. 2
1, 3, 5, 7, 8, 10, 12, 14, 15, 17, 19, 21, 22, 24, 26, 28, 29, 31, 33, 35, 36, 38, 40, 42, 43, 45, 47, 49, 50, 52, 54, 56, 58, 59, 61, 63, 65, 66, 68, 70, 72, 73, 75, 77, 79, 80, 82, 84, 86, 87, 89, 91, 93, 94, 96, 98, 100, 101, 103, 105, 107, 109, 110, 112 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..1000

FORMULA

a(n) = k*n + O(1), where k = 2 - 1/(Pi + 1) = 1.7585.... - Charles R Greathouse IV, Mar 13 2018

MATHEMATICA

z = 120; r = Pi; s = Pi+1;

Table[n + Floor[n*r/s], {n, 1, z}]  (* A292648 *)

Table[n + Floor[n*s/r], {n, 1, z}]  (* A292649 *)

PROG

(PARI) a(n)=n*Pi\(Pi+1) + n \\ Charles R Greathouse IV, Mar 13 2018

CROSSREFS

Cf. A292649 (complement).

Sequence in context: A184626 A047392 A330117 * A187330 A059546 A284366

Adjacent sequences:  A292645 A292646 A292647 * A292649 A292650 A292651

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Sep 26 2017

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 22 07:39 EST 2020. Contains 331139 sequences. (Running on oeis4.)